mailcow/data/web/inc/functions.acl.inc.php

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PHP
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<?php
function acl($_action, $_scope = null, $_data = null) {
global $pdo;
global $lang;
$_data_log = $_data;
switch ($_action) {
case 'edit':
switch ($_scope) {
case 'user':
if (!is_array($_data['username'])) {
$usernames = array();
$usernames[] = $_data['username'];
}
else {
$usernames = $_data['username'];
}
foreach ($usernames as $username) {
// Cast to array for single selections
$acls = (array)$_data['user_acl'];
// Create associative array from index array
// All set items are given 1 as value
foreach ($acls as $acl_key => $acl_val) {
$acl_post[$acl_val] = 1;
}
// Users cannot change their own ACL
if (!hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $username)
|| ($_SESSION['mailcow_cc_role'] != 'admin' && $_SESSION['mailcow_cc_role'] != 'domainadmin')) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_scope, $_data_log),
'msg' => 'access_denied'
);
continue;
}
// Read all available acl options by calling acl(get)
// Set all available acl options we cannot find in the post data to 0, else 1
$is_now = acl('get', 'user', $username);
if (!empty($is_now)) {
foreach ($is_now as $acl_now_name => $acl_now_val) {
$set_acls[$acl_now_name] = (isset($acl_post[$acl_now_name])) ? 1 : 0;
}
}
else {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_scope, $_data_log),
'msg' => 'Cannot determine current ACL'
);
continue;
}
foreach ($set_acls as $set_acl_key => $set_acl_val) {
$stmt = $pdo->prepare("UPDATE `user_acl` SET " . $set_acl_key . " = " . intval($set_acl_val) . "
WHERE `username` = :username");
$stmt->execute(array(
':username' => $username,
));
}
$_SESSION['return'][] = array(
'type' => 'success',
'log' => array(__FUNCTION__, $_action, $_scope, $_data_log),
'msg' => array('acl_saved', $username)
);
}
break;
case 'domainadmin':
if ($_SESSION['mailcow_cc_role'] != 'admin') {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_scope, $_data_log),
'msg' => 'access_denied'
);
return false;
}
if (!is_array($_data['username'])) {
$usernames = array();
$usernames[] = $_data['username'];
}
else {
$usernames = $_data['username'];
}
foreach ($usernames as $username) {
// Cast to array for single selections
$acls = (array)$_data['da_acl'];
// Create associative array from index array
// All set items are given 1 as value
foreach ($acls as $acl_key => $acl_val) {
$acl_post[$acl_val] = 1;
}
// Users cannot change their own ACL
if ($_SESSION['mailcow_cc_role'] != 'admin') {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_scope, $_data_log),
'msg' => 'access_denied'
);
continue;
}
// Read all available acl options by calling acl(get)
// Set all available acl options we cannot find in the post data to 0, else 1
$is_now = acl('get', 'domainadmin', $username);
if (!empty($is_now)) {
foreach ($is_now as $acl_now_name => $acl_now_val) {
$set_acls[$acl_now_name] = (isset($acl_post[$acl_now_name])) ? 1 : 0;
}
}
else {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_scope, $_data_log),
'msg' => 'Cannot determine current ACL'
);
continue;
}
foreach ($set_acls as $set_acl_key => $set_acl_val) {
$stmt = $pdo->prepare("UPDATE `da_acl` SET " . $set_acl_key . " = " . intval($set_acl_val) . "
WHERE `username` = :username");
$stmt->execute(array(
':username' => $username,
));
}
$_SESSION['return'][] = array(
'type' => 'success',
'log' => array(__FUNCTION__, $_action, $_scope, $_data_log),
'msg' => array('acl_saved', $username)
);
}
break;
}
break;
case 'get':
switch ($_scope) {
case 'user':
if (!hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $_data)) {
return false;
}
$stmt = $pdo->prepare("SELECT * FROM `user_acl` WHERE `username` = :username");
$stmt->execute(array(':username' => $_data));
$data = $stmt->fetch(PDO::FETCH_ASSOC);
if ($_SESSION['mailcow_cc_role'] == 'domainadmin') {
// Domain admins cannot see, add or remove user ACLs they don't have access to by themselves
// Editing a user will use acl("get", "user") to determine granted ACLs and therefore block unallowed access escalation via form editing
$self_da_acl = acl('get', 'domainadmin', $_SESSION['mailcow_cc_username']);
foreach ($self_da_acl as $self_da_acl_key => $self_da_acl_val) {
if ($self_da_acl_val == 0) {
unset($data[$self_da_acl_key]);
}
}
}
if (!empty($data)) {
unset($data['username']);
return $data;
}
else {
return false;
}
break;
case 'domainadmin':
if ($_SESSION['mailcow_cc_role'] != 'admin' && $_SESSION['mailcow_cc_role'] != 'domainadmin') {
return false;
}
if ($_SESSION['mailcow_cc_role'] == 'domainadmin' && $_SESSION['mailcow_cc_username'] != $_data) {
return false;
}
$stmt = $pdo->prepare("SELECT * FROM `da_acl` WHERE `username` = :username");
$stmt->execute(array(':username' => $_data));
$data = $stmt->fetch(PDO::FETCH_ASSOC);
if (!empty($data)) {
unset($data['username']);
return $data;
}
else {
return false;
}
break;
}
break;
case 'to_session':
if (!isset($_SESSION['mailcow_cc_role'])) {
return false;
}
unset($_SESSION['acl']);
$username = strtolower(trim($_SESSION['mailcow_cc_username']));
// Admins get access to all modules
if ($_SESSION['mailcow_cc_role'] == 'admin' ||
(isset($_SESSION["dual-login"]["role"]) && $_SESSION["dual-login"]["role"] == 'admin')) {
$stmt = $pdo->query("SHOW COLUMNS FROM `user_acl` WHERE `Field` != 'username';");
$acl_all = $stmt->fetchAll(PDO::FETCH_ASSOC);
while ($row = array_shift($acl_all)) {
$acl['acl'][$row['Field']] = 1;
}
$stmt = $pdo->query("SHOW COLUMNS FROM `da_acl` WHERE `Field` != 'username';");
$acl_all = $stmt->fetchAll(PDO::FETCH_ASSOC);
while ($row = array_shift($acl_all)) {
$acl['acl'][$row['Field']] = 1;
}
}
elseif ($_SESSION['mailcow_cc_role'] == 'domainadmin' ||
(isset($_SESSION["dual-login"]["role"]) && $_SESSION["dual-login"]["role"] == 'domainadmin')) {
// Read all exting user_acl modules and set to 1
$stmt = $pdo->query("SHOW COLUMNS FROM `user_acl` WHERE `Field` != 'username';");
$acl_all = $stmt->fetchAll(PDO::FETCH_ASSOC);
while ($row = array_shift($acl_all)) {
$acl['acl'][$row['Field']] = 1;
}
// Read da_acl rules for current user, OVERWRITE overlapping modules
// This prevents access to a users sync jobs, when a domain admins was not given access to sync jobs
$stmt = $pdo->prepare("SELECT * FROM `da_acl` WHERE `username` = :username");
$stmt->execute(array(':username' => (isset($_SESSION["dual-login"]["username"])) ? $_SESSION["dual-login"]["username"] : $username));
$acl_user = $stmt->fetch(PDO::FETCH_ASSOC);
foreach ($acl_user as $acl_user_key => $acl_user_val) {
$acl['acl'][$acl_user_key] = $acl_user_val;
}
unset($acl['acl']['username']);
}
elseif ($_SESSION['mailcow_cc_role'] == 'user') {
$stmt = $pdo->prepare("SELECT * FROM `user_acl` WHERE `username` = :username");
$stmt->execute(array(':username' => $username));
$acl['acl'] = $stmt->fetch(PDO::FETCH_ASSOC);
unset($acl['acl']['username']);
}
if (!empty($acl)) {
$_SESSION = array_merge($_SESSION, $acl);
}
break;
}
}